Excel Help - How to Add a Watermark to a Worksheet in Excel 2013
In this video you’ll learn how to add watermarks to your worksheets. You’ll find this useful if you’d like to add a company logo or any other image to your spreadsheet.
Go to the Ribbon and click the Insert tab.
In the Text section, click Header & Footer.
The Header & Footer Tools Design tab appears.
Click Picture in the Header & Footer Elements section.
The Insert Pictures dialog box displays. Select the location of the image file.
Select the file and click insert.
To edit the image, click on the header again.
From the Header & Footer Tools Design tab, Click Format Picture
Click the Picture tab on the Format Picture dialog box and adjust the size or color.
Click OK and check if the changes were applied.